Knowledge & Memory MCP Servers

Knowledge & Memory category — 531 MCP servers, ranked by GitHub stars.

C

CogniRepo

Knowledge & Memory

FAISS, call graph, AST, BM25 — 34 MCP tools for AI agents. 50-80% token reduction. Offline.

★ 15 MCP Server
M

memoir

Knowledge & Memory

Persistent memory for AI coding tools via MCP. Remembers across sessions and machines.

★ 15 MCP Server
D

deep-thinker

Knowledge & Memory

Reasoning via a DAG thought graph with multiple strategies (dialectic, analogical, abductive and more), stuck detection, confidence…

★ 15 MCP Server
X

xchucx/agent-memory

Knowledge & Memory

Git-native project memory for AI coding agents: Markdown source of truth, reviewable, secret-safe.

★ 15 MCP Server
N

NexusMem

Knowledge & Memory

Local-first memory for AI coding agents: shell history with exit codes, git diffs, docs, MCP.

★ 15 MCP Server
T

Turnbook

Knowledge & Memory

Local long-term memory shared by all your AI agents, kept word for word on your own PC.

★ 14 MCP Server
M

michael-denyer/memory-mcp

Knowledge & Memory

Two-tier memory: hot cache (0ms) + semantic search. Self-organizing.

★ 14 MCP Server
O

Obsidian Brain

Knowledge & Memory

Obsidian MCP server: semantic search, knowledge graph, and vault editing. No plugin required.

★ 14 MCP Server
B

brainbox

Knowledge & Memory

Hebbian memory for AI agents. Learns file patterns, predicts next tools, saves tokens.

★ 14 MCP Server
M

Midas

Knowledge & Memory

Local-first, source-traceable agent memory — no LLM at ingest, fully offline

★ 14 MCP Server
L

Longhand

Knowledge & Memory

Local memory for Claude Code: 13 MCP tools for semantic recall, file replay, and git history.

★ 14 MCP Server
L

lennys-quotes

Knowledge & Memory

Search Lenny's Podcast transcripts with YouTube timestamps for product management insights on PRDs, strategy and PM careers.

★ 13 MCP Server
N

neurakeep

Knowledge & Memory

Local-first, source-cited memory for AI agents with proposal review, failure memory, and MCP tools.

★ 13 MCP Server
G

google-knowledge-graph-mcp

Knowledge & Memory

Search Google's Knowledge Graph for structured information about real-world entities

★ 13 MCP Server
K

Kagura Memory Cloud

Knowledge & Memory

Persistent memory for AI assistants: store, search, and connect knowledge across conversations.

★ 13 MCP Server Requires auth
M

mcp-persona-sessions

Knowledge & Memory

Structured, persona-driven sessions for interview preparation, personal reflection and coaching, with timers and performance evaluation.

★ 13 MCP Server
O

Obsidian Vault MCP Server

Knowledge & Memory

Access Obsidian vaults via Local REST API - read, search, and interact with notes

★ 13 MCP Server
E

empathy-framework

Knowledge & Memory

Five-level AI collaboration system with persistent local-first memory via MemDocs and anticipatory capabilities.

★ 13 MCP Server
O

Obsidian Turbocharged

Knowledge & Memory

Governed Obsidian vault access: hybrid retrieval, Markdown-native memory, HITL confirmations.

★ 13 MCP Server
X

XMemo

Knowledge & Memory

Shared, governed long-term memory for AI agents across tools and sessions via MCP and REST.

★ 13 MCP Server Requires auth
T

token-compressor

Knowledge & Memory

Compress prompts 40-60% using local LLM + embedding validation. Preserves all conditionals.

★ 12 MCP Server
C

claude-find

Knowledge & Memory

Pull Deep Memory from across your Claude Code Sessions — when you need it.

★ 12 MCP Server
L

Lockstep AI

Knowledge & Memory

Shared team memory for Claude Code: decisions, standards, and skills every agent session receives.

★ 12 MCP Server
N

n24q02m/mnemo

Knowledge & Memory

Persistent AI memory with hybrid search and embedded sync. Open, free, unlimited.

★ 12 MCP Server
A

anneal-memory

Knowledge & Memory

Two-layer memory for AI agents with an immune system. Zero dependencies.

★ 12 MCP Server
S

stifler7/memex

Knowledge & Memory

Temporal engineering context for agents via MCP.

★ 12 MCP Server
C

Cathedral — Persistent Memory for AI Agents

Knowledge & Memory

Persistent memory and drift detection for AI agents across session restarts.

★ 11 MCP Server Requires auth
C

coldstart

Knowledge & Memory

Codebase memory for AI agents: an AST index plus agent-written notes that self-stale.

★ 11 MCP Server
H

hyunjae-labs/lore

Knowledge & Memory

Local semantic search across Claude Code conversations with hybrid vector and keyword search, background indexing and per-project selection.

★ 11 MCP Server
S

skillmem

Knowledge & Memory

Skill memory for coding agents: learn, recall, reinforce, decay. Local SQLite, no API key.

★ 11 MCP Server
L

LIFE

Knowledge & Memory

Persistent identity for AI agents: servers for drives, relationships, semantic memory with decay, working threads, learned patterns,…

★ 11 MCP Server
A

agentkitai/lore

Knowledge & Memory

Cross-agent memory over MCP: hybrid recall, knowledge graph, private/shared visibility, redaction.

★ 10 MCP Server
M

memory-arbiter-mcp

Knowledge & Memory

Local SQLite MCP memory: evidence-based recall, advisory conflict notices, authorized governance.

★ 10 MCP Server
K

KLYPIX Shared Project Memory

Knowledge & Memory

Shared project memory for Claude Code, Codex and Cursor: decisions, corrections, overlap warnings.

★ 10 MCP Server
O

obsidian-github-mcp

Knowledge & Memory

Connect AI assistants to your GitHub-hosted Obsidian vault to seamlessly access, search, and analy…

★ 10 MCP Server
H

hivemind

Knowledge & Memory

MCP server for Obsidian vaults - AI tools with consistent canonical context. Local-first.

★ 10 MCP Server
P

Postgram

Knowledge & Memory

Self-hosted memory for AI agents with hybrid search, knowledge graphs, tasks, and document sync.

★ 10 MCP Server
T

Turbo Quant Memory

Knowledge & Memory

Local-first memory and knowledge graph for coding agents. Compact retrieval, no network.

★ 10 MCP Server
H

Hive Vault

Knowledge & Memory

On-demand Obsidian vault access for AI coding assistants — 17 tools, 5 resources, 4 prompts.

★ 10 MCP Server
G

genome

Knowledge & Memory

Fully local memory for AI agents: zero-LLM ingest, semantic recall, air-gapped, auditable.

★ 10 MCP Server
C

CodeCortex

Knowledge & Memory

Persistent codebase knowledge for coding agents: symbols, dependency graphs, co-change patterns and architectural decisions extracted with…

★ 10 MCP Server
T

Tribal

Knowledge & Memory

Self-hosted semantic memory over MCP for an engineering team's tacit knowledge. Needs Postgres.

★ 10 MCP Server
V

Veracium

Knowledge & Memory

Provenance-aware memory for AI agents: quarantine, abstention gate, supersession-with-history.

★ 10 MCP Server
S

synapse

Knowledge & Memory

Zero-runtime-dependency Markdown memory vault with SQLite search, linked wiki pages, ChatGPT/Claude imports, and human-approved agent note…

★ 9 MCP Server
L

legends-mcp

Knowledge & Memory

Chat with AI personas of famous founders and investors such as Elon Musk, Warren Buffett and Steve Jobs, based on their voices, frameworks…

★ 9 MCP Server
S

sessionmem

Knowledge & Memory

Local memory for coding assistants: watches sessions and injects a compact summary at the start of each new one, stored in a SQLite file.

★ 9 MCP Server
H

hbarefoot/engram

Knowledge & Memory

Local-first persistent memory for AI agents — SQLite + local embeddings, MCP-native, no cloud.

★ 9 MCP Server
A

AvianSuite

Knowledge & Memory

AI agents run business processes on your business data. Every change is attributed and reversible.

★ 9 MCP Server Requires auth
W

wellread

Knowledge & Memory

Shared research cache across agents: reuse answers from verified sources, or save new research for the next developer.

★ 9 MCP Server
A

Artel

Knowledge & Memory

Self-hosted shared-memory & coordination mesh for AI agent fleets. You host it; agents connect.

★ 9 MCP Server
M

mnemostack

Knowledge & Memory

Self-hosted hybrid agent memory on Qdrant combining vector search, BM25, temporal retrieval and an optional Memgraph knowledge graph via…

★ 9 MCP Server
A

Agent-Memory-OS

Knowledge & Memory

Local-first memory engine for AI-agent teams: team/project ACL, recall, and federated sync.

★ 9 MCP Server
I

inspeximus: agent memory with provenance, GDPR erasure and a tamper-evident audit trail

Knowledge & Memory

Self-correcting agent memory: recall, supersede, revert, forget, GDPR erasure, audit receipts.

★ 8 MCP Server
D

dexio

Knowledge & Memory

One wiki that all your agents read and write over MCP, from any machine: search, read, write, edit and move Markdown pages, with every…

★ 8 MCP Server
G

g1itchbot8888-del/agent-memory

Knowledge & Memory

Three-layer agent memory (identity, active, archive) with semantic search, graph relationships and conflict detection.

★ 8 MCP Server
H

hypermnesic

Knowledge & Memory

Git-first agent memory: Markdown files are the source of truth, the index is disposable and writes are reviewable commits, with hybrid…

★ 8 MCP Server
M

memstate-mcp

Knowledge & Memory

Versioned, structured agent memory storing facts as keypaths with full version history and automatic conflict detection.

★ 8 MCP Server
C

crbro-memory

Knowledge & Memory

Persistent file-based memory for AI agents: inspectable, versionable, fully local.

★ 8 MCP Server
A

adhd-hub

Knowledge & Memory

Self-hosted project-continuity hub for coding agents: tracks unfinished work, progress, overlap and reminders across clients.

★ 8 MCP Server
A

AIWiki

Knowledge & Memory

Search and read AiWiki, a bilingual English/Chinese encyclopedia of AI-coding pitfalls and LLM privacy protection, with cited evidence.

★ 8 MCP Server